Tuite Mineral Data

Tuite Mineral Data
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General Tuite Information

Help on Chemical Formula: Chemical Formula: Ca3(PO4)2
Help on Composition: Composition: Molecular Weight = 306.55 gm
   Sodium       2.10 %  Na    2.83 % Na2O
   Calcium     32.81 %  Ca   45.91 % CaO
   Magnesium    2.14 %  Mg    3.55 % MgO
   Iron         0.36 %  Fe    0.47 % FeO
   Phosphorus  20.41 %  P    46.77 % P2O5
   Oxygen      42.17 %  O
              ______        ______ 
              100.00 %       99.53 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2.51Na0.28Mg0.27Fe2+0.02(PO4)2.02
Help on Environment: Environment: In a shock-melt vein of the meteorite. High pressure polymorph of whitlockite.
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Suizhou L6 chondrite meteorite, which fell in 1986 in Dayanpo, 12.5 km southeast of the city of Suizhou, Hubei Province, People’s Republic of China. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Guangzhi Tu (1920-), professor and founding director of the Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, Guangdong Province, People’s Repub lic of China.
Help on Synonym: Synonym: IMA2001-070
 

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Tuite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:3.56162
Help on Cell Dimensions: Cell Dimensions: a = 5.258, c = 18.727, Z = 3; V = 448.37 Den(Calc)= 3.41
Help on Crystal System: Crystal System: Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.628(1)(110), 2.891(0.8)(105), 1.945(0.47)(205),1.73(0.245)(0.1.10), 2.214(0.2)(202), 2.047(0.16), 2.078(0.12),
 

Physical Properties of Tuite

Help on Color: Color: White, Yellowish gray.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Tuite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.056 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2063,KC= 0.1954
Ncalc = 1.67
Help on Optical Data: Optical Data: Uniaxial (+), w=1.701, e=1.706, bire=0.0050.
 

Calculated Properties of Tuite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.38 gm/cc
note: Specific Gravity of Tuite =3.41 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0028633438
Boson Index = 0.9971366562
Help on Photoelectric: Photoelectric: PETuite = 5.21 barns/electron
U=PETuite x rElectron Density= 17.60 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tuite is Not Radioactive
 

Tuite Classification
Help on Dana Class: Dana Class: 38.03.04.07 (38)Anhydrous Phosphates, etc
  (38.03)(A+ B++)3 (XO4)2
  (38.03.04)Whitlockite group
 
38.03.04.01 Whitlockite Ca9(Mg,Fe)(PO4)6(PO3OH) R 3c 3m
 
38.03.04.02 Strontiowhitlockite Sr7(Mg,Ca)3(PO4)6[PO3(OH)] R 3c 3m
 
38.03.04.03 Merrillite-(Ca)* (Ca,[])19Mg2(PO4)14 R 3c 3m
 
38.03.04.04 Merrillite Ca18Na2Mg2(PO4)14 R 3c 3m
 
38.03.04.05 Merrillite-(Y)* Ca16Y2Mg2(PO4)14 R 3c 3m
 
38.03.04.06 Ferromerrillite! Ca9NaFe(PO4)7 R 3c 3m
 
38.03.04.07 Tuite! Ca3(PO4)2 R 3m 3m
 
38.03.04.08 Bobdownsite! Ca9Mg(PO3F)(PO4)6 R 3c 3m
Help on Strunz Class: Strunz Class: 08.AC.45 08 - PHOSPHATES, ARSENATES, VANADATES
  08.A - Phosphates, etc. without additional anions, without H2O
  08.AC -With medium-sized and large cations
 
08.AC.45 Merrillite-(Ca)* (Ca,[])19Mg2(PO4)14 R 3c 3m
 
08.AC.45 Merrillite Ca18Na2Mg2(PO4)14 R 3c 3m
 
08.AC.45 Merrillite-(Y)* Ca16Y2Mg2(PO4)14 R 3c 3m
 
08.AC.45 Strontiowhitlockite Sr7(Mg,Ca)3(PO4)6[PO3(OH)] R 3c 3m
 
08.AC.45 Whitlockite Ca9(Mg,Fe)(PO4)6(PO3OH) R 3c 3m
 
08.AC.45 Ferromerrillite! Ca9NaFe(PO4)7 R 3c 3m
 
08.AC.45 Tuite! Ca3(PO4)2 R 3m 3m
 
08.AC.45 Bobdownsite! Ca9Mg(PO3F)(PO4)6 R 3c 3m
 

Other Tuite Information
Help on References: References: NAME( CanMin, v 42:1259) PHYS. PROP.(CanMin, v 42:1259) OPTIC PROP.(CanMin, v 42:1259)
Help on See Also: See Also: Links to other databases for Tuite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Google Images
4 - Google Scholar
5 - MinDAT
6 - MinMax(Deutsch)
7 - MinMax(English)
8 - Mineralienatlas (Deutsch)
9 - QUT Mineral Atlas
10 - Ruff.Info

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Print or Cut-and-Paste your Tuite Specimen Label here :

Tuite

Ca3(PO4)2
Dana No: 38.03.04.07 Strunz No: 08.AC.45
Locality:

 

Notes: